# 定义地区的计费信息
region_info = {
    "01": {"first_weight_price": 13, "additional_weight_price": 3},
    "02": {"first_weight_price": 12, "additional_weight_price": 2},
    "03": {"first_weight_price": 14, "additional_weight_price": 4}
}

region_id = input("请输入地区编号（01 华东地区，02 华南地区，03 华北地区）: ")
weight = float(input("请输入邮件重量（单位：kg）: "))

if region_id in region_info:
    if weight <= 2:
        price = region_info[region_id]["first_weight_price"]
    else:
        additional_weight = weight - 2
        price = region_info[region_id]["first_weight_price"] + additional_weight * region_info[region_id]["additional_weight_price"]
    region_name = ""
    if region_id == "01":
        region_name = "华东地区"
    elif region_id == "02":
        region_name = "华南地区"
    elif region_id == "03":
        region_name = "华北地区"
    print(f"快递发往{region_name}，重{weight}kg，快递费是：{price}元")
else:
    print("输入的地区编号不正确，请重新输入。")